Hi,

How can one show a UITypeEditor for a property that does not have a set ?

To give you an example the CollectionEditor is shown for properties of type List<T> even if they do not have a set. How is that achievable for other properties ?

Regards,
Rajeev

I've noticed that, however it works fine when I try it. Clicking the little button with three dots in the propertyGrid next to the "Array" property invokes the EditValue method of MyUITypeEditor, isn't that what you wanted?

	class Test
	{
		private ABC[] array = new ABC[] { new ABC(), new ABC() };

		[Editor(typeof(MyUITypeEditor), typeof(UITypeEditor))]
		public ICollection Array
		{
			get
			{
				return array;
			}
		}
	}

Let me know if I'm missing anything.

/Calle

---

- Still confused, but on a higher level -

Hi Calle,

You are right. It works when the property's return type is ICollection.

This seems to be the best solution so far if we accept the following drawbacks:
1) It would be painful to typecast the property to the appropriate array before using it every time
2) There is no chance of having a DropDown editor

I was expecting a more simple solution like an attribute or something in the TypeConverter or the UITypeEditor. But looks like there isn't one.

Thanks once again !

Regards,
Rajeev

A List<> is different, editing doesn't change the List instance, it changes the list elements. There's no point in writing an editor for regular properties that don't have a setter, you can't change the value.

---

Hans Passant.

Hi,

That is not true. I could have a property without a set that is an array of a type which has a changeable Boolean variable.
Like the one below

class ABC
{
      private bool enabled;

      public bool Enabled
      {
           get{return enabled;}
           set{enabled = value;}
      }
}

In the above case I would want to have a UITypeEditor that simply lets me change the property Enabled. I dont need to change the array altogether but only do something to the elements.

I hope you understood that.

Regards,
Rajeev

Well, an array is just another collection object. Same rules apply, you want to edit the elements, not the array instance. Do you have a specific question about this?

---

Hans Passant.

Here is the scenario. If you try the below given code you will notice that the property Array is shown as if a UITypeEditor cannot be shown from it (unlike a List<ABC> which would have shown a standard CollectionEditor)

class Test
{
    private ABC[] array = new ABC[] { new ABC(), new ABC() };

    [Editor(typeof(MyUITypeEditor), typeof(UITypeEditor)]
    public ABC[] Array
    {
        get { return array; }
    }
}

class ABC
{
    private bool enabled;

    public bool Enabled
    {
        get { return enabled; }
        set { enabled = value; }
    }
}

To reiterate, what can I do so that MyUITypeEditor.EditValue is invoked for the above given scenario when i show the object of Test in a property grid ?

Regards,
Rajeev

Sorry for being pushy, but is it just not possible ?

Could somebody please confirm whether it even has a solution or not ?

Thanks,
Rajeev

To get the behaviour you're looking for theproperty you have must return an ICollection. Also, in your custom type editor you must override the GetEditStyle method and return UITypeEditorEditStyle.Modal.

/Calle

---

- Still confused, but on a higher level -

Hi Calle,

Thank you for the reply.
However that does not solve the problem. Please note that there is no set in the property that I am trying to invoke the editor for, just in case you missed it.

Thanks anyway.

Regards,
Rajeev

I've noticed that, however it works fine when I try it. Clicking the little button with three dots in the propertyGrid next to the "Array" property invokes the EditValue method of MyUITypeEditor, isn't that what you wanted?

	class Test
	{
		private ABC[] array = new ABC[] { new ABC(), new ABC() };

		[Editor(typeof(MyUITypeEditor), typeof(UITypeEditor))]
		public ICollection Array
		{
			get
			{
				return array;
			}
		}
	}

Let me know if I'm missing anything.

/Calle

---

- Still confused, but on a higher level -

Hi Calle,

You are right. It works when the property's return type is ICollection.

This seems to be the best solution so far if we accept the following drawbacks:
1) It would be painful to typecast the property to the appropriate array before using it every time
2) There is no chance of having a DropDown editor

I was expecting a more simple solution like an attribute or something in the TypeConverter or the UITypeEditor. But looks like there isn't one.

Thanks once again !

Regards,
Rajeev